In what is becoming a fairly common occurrence, 30 vehicles were vandalized by a woman who was under the impression that the cars belonged to people attending a Donald Trump rally in the town on Amherst Junction, Wisconsin.

Only it wasn't a Trump rally.

The details:

A woman was arrested on Monday after allegedly smearing peanut butter on 30 cars parked outside what she believed was a pro-Donald Trump rally.

Christina Ferguson was arrested in Amherst Junction, Wisconsin after interrupting what turned out to be a meeting of a local environmental organisation, Tomorrow River Conservation Club.

Witnesses claimed the 32-year-old entered the meeting at 9:30pm holding a “family-size jar of low-sodium, creamy natural Jif” peanut butter, shouting about how much she hated the Republican candidate.

Ms Ferguson was asked to leave the premises but shortly after, members went to check the car park to “make sure she wasn’t doing anything to their vehicles after leaving.”